Addition of High Acyl Gellan Gum to Low Acyl Gellan Gum Enables the Blends 3D Bioprintable. 2022

Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus, Faculty of Medicine of Technische Universität Dresden, Fetscherstr. 74, 01307 Dresden, Germany.

Long-term stability of gellan gum (GG) at physiological conditions is expected, as very low concentration of divalent ions are required for crosslinking, as compared to alginate—which is extensively used for tissue engineering (TE) applications. Hence, GG is proposed as an ideal candidate to substitute alginate for TE. Deacylated (low acyl; LA) GG forms brittle gels, thus only low concentrations were used for cell encapsulation, whereas acylated (high acyl; HA) GG forms weak/soft gels. 3D bioprinting using pure LAGG or HAGG is not possible owing to their rheological properties. Here, we report development and characterization of bioprintable blends of LAGG and HAGG. Increase in HAGG in the blends improved shear recovery and shape fidelity of printed scaffolds. Low volumetric swelling observed in cell culture conditions over 14 days indicates stability. Volumetric scaffolds were successfully printed and their mechanical properties were determined by uniaxial compressive testing. Mesenchymal stem cells bioprinted in blends of 3% LAGG and 3% HAGG survived the printing process showing >80% viability; a gradual decrease in cell numbers was observed over 21 days of culture. However, exploiting intrinsic advantages of 3D bioprinting, LAGG/HAGG blends open up numerous possibilities to improve and/or tailor various aspects required for TE.

UI MeSH Term Description Entries

Related Publications

Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
June 2016, Food science and technology international = Ciencia y tecnologia de los alimentos internacional,
Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
July 2022, Gels (Basel, Switzerland),
Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
September 2022, International journal of biological macromolecules,
Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
November 2018, Carbohydrate polymers,
Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
October 2021, Journal of food science,
Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
February 2024, Carbohydrate polymers,
Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
May 2021, Carbohydrate polymers,
Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
March 2017, In vitro cellular & developmental biology. Animal,
Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
May 2023, Journal of the science of food and agriculture,
Ashwini Rahul Akkineni, and Bilge Sen Elci, and Anja Lode, and Michael Gelinsky
January 2019, Food and bioprocess technology,
Copied contents to your clipboard!